The sand-laden wind had cut into it, carving away softer material so that the rock was a series of irregular columns and hummocks.

It created minor controversy in Serbia when in November 2007 it started publishing irregular columns by Mira Marković.

Levant wrote an irregular column for the Calgary Sun for ten years, until he was dropped in October 2007 because of "internal decisions."

In January, 2008, Khoury began producing an irregular weekly column for ComicBookResources.com entitled "Pop!"

Since December 2008, Ergić has been writing an irregular column for Serbian daily newspaper Politika.

But there was another figure in that darkness one that was moving in upon the irregular column of Hoods.

Several twisting, irregular columns of people had intersected at a point not too far outside the city, to form a group at least a hundred thousand strong.

The front of the irregular column was wiped out utterly.

On the inside, irregular tree-like columns support the domes.

Evaporation fog sometimes forms in irregular columns rising from the surface of water; such fog is commonly called steam fog.